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https://github.com/reactos/reactos.git
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141 lines
4 KiB
C
141 lines
4 KiB
C
/*
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* PROJECT: ReactOS Boot Loader
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* LICENSE: BSD - See COPYING.ARM in the top level directory
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* FILE: boot/freeldr/freeldr/cmdline.c
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* PURPOSE: FreeLDR Command Line Parsing
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* PROGRAMMERS: ReactOS Portable Systems Group
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*/
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/* INCLUDES *******************************************************************/
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#include <freeldr.h>
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/* GLOBALS ********************************************************************/
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typedef struct tagCMDLINEINFO
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{
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PCCH DebugString;
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PCCH DefaultOperatingSystem;
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LONG TimeOut;
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} CMDLINEINFO, *PCMDLINEINFO;
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CCHAR DebugString[256];
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CCHAR DefaultOs[256];
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CMDLINEINFO CmdLineInfo;
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/* FUNCTIONS ******************************************************************/
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VOID
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CmdLineParse(IN PCCH CmdLine)
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{
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PCHAR End, Setting;
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ULONG_PTR Length, Offset = 0;
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/* Set defaults */
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CmdLineInfo.DebugString = NULL;
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CmdLineInfo.DefaultOperatingSystem = NULL;
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CmdLineInfo.TimeOut = -1;
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/*
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* Get debug string, in the following format:
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* "debug=option1=XXX;option2=YYY;..."
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* and translate it into the format:
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* "OPTION1=XXX OPTION2=YYY ..."
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*/
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Setting = strstr(CmdLine, "debug=");
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if (Setting)
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{
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/* Check if there are more command-line parameters following */
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Setting += sizeof("debug=") + sizeof(ANSI_NULL);
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End = strstr(Setting, " ");
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if (End)
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Length = End - Setting;
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else
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Length = sizeof(DebugString);
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/* Copy the debug string and upcase it */
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strncpy(DebugString, Setting, Length);
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DebugString[Length - 1] = ANSI_NULL;
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_strupr(DebugString);
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/* Replace all separators ';' by spaces */
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Setting = DebugString;
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while (*Setting)
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{
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if (*Setting == ';') *Setting = ' ';
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Setting++;
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}
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CmdLineInfo.DebugString = DebugString;
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}
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/* Get timeout */
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Setting = strstr(CmdLine, "timeout=");
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if (Setting) CmdLineInfo.TimeOut = atoi(Setting +
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sizeof("timeout=") +
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sizeof(ANSI_NULL));
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/* Get default OS */
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Setting = strstr(CmdLine, "defaultos=");
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if (Setting)
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{
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/* Check if there are more command-line parameters following */
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Setting += sizeof("defaultos=") + sizeof(ANSI_NULL);
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End = strstr(Setting, " ");
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if (End)
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Length = End - Setting;
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else
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Length = sizeof(DefaultOs);
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/* Copy the default OS */
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strncpy(DefaultOs, Setting, Length);
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DefaultOs[Length - 1] = ANSI_NULL;
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CmdLineInfo.DefaultOperatingSystem = DefaultOs;
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}
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/* Get ramdisk base address */
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Setting = strstr(CmdLine, "rdbase=");
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if (Setting) gRamDiskBase = (PVOID)(ULONG_PTR)strtoull(Setting +
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sizeof("rdbase=") -
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sizeof(ANSI_NULL),
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NULL,
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0);
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/* Get ramdisk size */
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Setting = strstr(CmdLine, "rdsize=");
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if (Setting) gRamDiskSize = strtoul(Setting +
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sizeof("rdsize=") -
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sizeof(ANSI_NULL),
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NULL,
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0);
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/* Get ramdisk offset */
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Setting = strstr(CmdLine, "rdoffset=");
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if (Setting) Offset = strtoul(Setting +
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sizeof("rdoffset=") -
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sizeof(ANSI_NULL),
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NULL,
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0);
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/* Fix it up */
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gRamDiskBase = (PVOID)((ULONG_PTR)gRamDiskBase + Offset);
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}
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PCCH
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CmdLineGetDebugString(VOID)
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{
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return CmdLineInfo.DebugString;
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}
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PCCH
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CmdLineGetDefaultOS(VOID)
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{
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return CmdLineInfo.DefaultOperatingSystem;
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}
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LONG
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CmdLineGetTimeOut(VOID)
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{
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return CmdLineInfo.TimeOut;
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}
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